Update git submodules

* Update docs/submodules/armband from branch 'master'
  - p/fuel: Retry armband state, fail on not connected

    We no longer expect the armband state to fail on any nodes,
    baremetal or virtual, kvm or cmp, so remove failsafe `|| true`
    and retry state apply in case minions did not repond.

    Change-Id: I7b4302a89d60c94ab3f58cd6b8523cf668314a05
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/armband b/docs/submodules/armband
index 648ec98..6eab8c9 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit 648ec98613d31e3d9701b9ac1d87aed640b245f3
+Subproject commit 6eab8c989c257213586347f284362cc43f99d3f4